Cleaned some code, added API docs

src/app/qgsmapcanvasdockwidget.cpp

@@ -95,7 +95,7 @@ QgsMapCanvasDockWidget::QgsMapCanvasDockWidget( const QString &name, QWidget *pa
   connect( mMapCanvas, &QgsMapCanvas::destinationCrsChanged, this, &QgsMapCanvasDockWidget::mapCrsChanged );
   connect( mMapCanvas, &QgsMapCanvas::destinationCrsChanged, this, &QgsMapCanvasDockWidget::updateExtentRect );
   connect( mActionZoomFullExtent, &QAction::triggered, mMapCanvas, &QgsMapCanvas::zoomToFullExtent );
-  connect( mActionZoomToLayer, &QAction::triggered, mMapCanvas, [ = ] { QgisApp::instance()->layerTreeView()->defaultActions()->zoomToLayer( mMapCanvas ); } );
+  connect( mActionZoomToLayers, &QAction::triggered, mMapCanvas, [ = ] { QgisApp::instance()->layerTreeView()->defaultActions()->zoomToLayers( mMapCanvas ); } );
   connect( mActionZoomToSelected, &QAction::triggered, mMapCanvas, [ = ] { mMapCanvas->zoomToSelected(); } );
   mapCrsChanged();
 

src/gui/layertree/qgslayertreeviewdefaultactions.cpp

@@ -103,7 +103,7 @@ QAction *QgsLayerTreeViewDefaultActions::actionZoomToLayers( QgsMapCanvas *canva
 {
   QAction *a = new QAction( QgsApplication::getThemeIcon( QStringLiteral( "/mActionZoomToLayer.svg" ) ),
                             tr( "&Zoom to Layer(s)" ), parent );
-  a->setData( QVariant::fromValue( reinterpret_cast<void *>( canvas ) ) );
+  a->setData( QVariant::fromValue( canvas ) );
   connect( a, &QAction::triggered, this, static_cast<void ( QgsLayerTreeViewDefaultActions::* )()>( &QgsLayerTreeViewDefaultActions::zoomToLayers ) );
   return a;
 }
@@ -346,7 +346,7 @@ void QgsLayerTreeViewDefaultActions::zoomToLayer()
 void QgsLayerTreeViewDefaultActions::zoomToLayers()
 {
   QAction *s = qobject_cast<QAction *>( sender() );
-  QgsMapCanvas *canvas = reinterpret_cast<QgsMapCanvas *>( s->data().value<void *>() );
+  QgsMapCanvas *canvas = s->data().value<QgsMapCanvas *>();
   QApplication::setOverrideCursor( Qt::WaitCursor );
   zoomToLayers( canvas );
   QApplication::restoreOverrideCursor();

src/gui/layertree/qgslayertreeviewdefaultactions.h

@@ -62,6 +62,10 @@ class GUI_EXPORT QgsLayerTreeViewDefaultActions : public QObject
      */
     Q_DECL_DEPRECATED QAction *actionZoomToLayer( QgsMapCanvas *canvas, QObject *parent = nullptr ) SIP_FACTORY;
 
+    /**
+     * Action to zoom to all the selected layer(s) in the layer tree
+     * \since QGIS 3.18
+     */
     QAction *actionZoomToLayers( QgsMapCanvas *canvas, QObject *parent = nullptr ) SIP_FACTORY;
 
     /**
@@ -106,6 +110,11 @@ class GUI_EXPORT QgsLayerTreeViewDefaultActions : public QObject
     */
     Q_DECL_DEPRECATED void zoomToLayer( QgsMapCanvas *canvas );
 
+    /**
+     * Zooms to all the selected layer(s) in the layer tree
+     * \see zoomToLayers()
+     * \since QGIS 3.18
+     */
     void zoomToLayers( QgsMapCanvas *canvas );
 
     /**
@@ -129,6 +138,10 @@ class GUI_EXPORT QgsLayerTreeViewDefaultActions : public QObject
      */
     Q_DECL_DEPRECATED void zoomToLayer();
 
+    /**
+     * Slot to zoom to all the selected layer(s) in the layer tree
+     * \since QGIS 3.18
+     */
     void zoomToLayers();
 
     /**